Bug#831202: me-tv: FTBFS with GCC 6: dvb_frontend.cc:93:89: error: call of overloaded 'abs(unsigned int)' is ambiguous
Source: me-tv
Version: 1.3.7-1
Severity: serious
Tags: stretch sid
User: debian-qa@lists.debian.org
Usertags: qa-ftbfs-20160713 qa-ftbfs
Justification: FTBFS with GCC 6 on amd64
Hi,
During a rebuild of all packages in sid using the gcc-defaults package
available in experimental to make GCC default to version 6, your package failed
to build on amd64. For more information about GCC 6 and Stretch, see:
- https://wiki.debian.org/GCC6
- https://lists.debian.org/debian-devel-announce/2016/06/msg00007.html
Relevant part (hopefully):
> g++ -DHAVE_CONFIG_H -I. -I.. -I.. -I.. -pthread -std=c++11 -pthread -I/usr/include/gtkmm-2.4 -I/usr/lib/x86_64-linux-gnu/gtkmm-2.4/include -I/usr/include/atkmm-1.6 -I/usr/include/gtk-unix-print-2.0 -I/usr/include/gtk-2.0 -I/usr/include/gdkmm-2.4 -I/usr/lib/x86_64-linux-gnu/gdkmm-2.4/include -I/usr/include/pangomm-1.4 -I/usr/lib/x86_64-linux-gnu/pangomm-1.4/include -I/usr/include/cairomm-1.0 -I/usr/lib/x86_64-linux-gnu/cairomm-1.0/include -I/usr/include/giomm-2.4 -I/usr/lib/x86_64-linux-gnu/giomm-2.4/include -I/usr/include/glibmm-2.4 -I/usr/lib/x86_64-linux-gnu/glibmm-2.4/include -I/usr/include/sigc++-2.0 -I/usr/lib/x86_64-linux-gnu/sigc++-2.0/include -I/usr/include/gconf/2 -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/gconfmm-2.6 -I/usr/lib/gconfmm-2.6/include -I/usr/include/unique-1.0 -DPACKAGE_DATA_DIR=\""/usr/share"\" -DPACKAGE_SRC_DIR=\""."\" -g -O2 -c -o dvb_frontend.o dvb_frontend.cc
> dvb_frontend.cc: In member function 'void Dvb::Frontend::tune_to(const Dvb::Transponder&, guint)':
> dvb_frontend.cc:93:89: error: call of overloaded 'abs(unsigned int)' is ambiguous
> parameters.frequency = abs(transponder.frontend_parameters.frequency - LNB_HIGH_VALUE);
> ^
> In file included from /usr/include/c++/6/cstdlib:75:0,
> from /usr/include/c++/6/ext/string_conversions.h:41,
> from /usr/include/c++/6/bits/basic_string.h:5402,
> from /usr/include/c++/6/string:52,
> from /usr/include/c++/6/bits/locale_classes.h:40,
> from /usr/include/c++/6/bits/ios_base.h:41,
> from /usr/include/c++/6/ios:42,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iterator:64,
> from /usr/include/glibmm-2.4/glibmm/ustring.h:26,
> from /usr/include/glibmm-2.4/glibmm/exception.h:25,
> from /usr/include/glibmm-2.4/glibmm/error.h:23,
> from /usr/include/glibmm-2.4/glibmm/thread.h:48,
> from /usr/include/glibmm-2.4/glibmm.h:89,
> from /usr/include/gtkmm-2.4/gtkmm.h:87,
> from me-tv.h:30,
> from dvb_frontend.cc:21:
> /usr/include/stdlib.h:774:12: note: candidate: int abs(int)
> extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
> ^~~
> In file included from /usr/include/c++/6/ext/string_conversions.h:41:0,
> from /usr/include/c++/6/bits/basic_string.h:5402,
> from /usr/include/c++/6/string:52,
> from /usr/include/c++/6/bits/locale_classes.h:40,
> from /usr/include/c++/6/bits/ios_base.h:41,
> from /usr/include/c++/6/ios:42,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iterator:64,
> from /usr/include/glibmm-2.4/glibmm/ustring.h:26,
> from /usr/include/glibmm-2.4/glibmm/exception.h:25,
> from /usr/include/glibmm-2.4/glibmm/error.h:23,
> from /usr/include/glibmm-2.4/glibmm/thread.h:48,
> from /usr/include/glibmm-2.4/glibmm.h:89,
> from /usr/include/gtkmm-2.4/gtkmm.h:87,
> from me-tv.h:30,
> from dvb_frontend.cc:21:
> /usr/include/c++/6/cstdlib:180:3: note: candidate: long long int std::abs(long long int)
> abs(long long __x) { return __builtin_llabs (__x); }
> ^~~
> /usr/include/c++/6/cstdlib:172:3: note: candidate: long int std::abs(long int)
> abs(long __i) { return __builtin_labs(__i); }
> ^~~
> dvb_frontend.cc:97:88: error: call of overloaded 'abs(unsigned int)' is ambiguous
> parameters.frequency = abs(transponder.frontend_parameters.frequency - LNB_LOW_VALUE);
> ^
> In file included from /usr/include/c++/6/cstdlib:75:0,
> from /usr/include/c++/6/ext/string_conversions.h:41,
> from /usr/include/c++/6/bits/basic_string.h:5402,
> from /usr/include/c++/6/string:52,
> from /usr/include/c++/6/bits/locale_classes.h:40,
> from /usr/include/c++/6/bits/ios_base.h:41,
> from /usr/include/c++/6/ios:42,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iterator:64,
> from /usr/include/glibmm-2.4/glibmm/ustring.h:26,
> from /usr/include/glibmm-2.4/glibmm/exception.h:25,
> from /usr/include/glibmm-2.4/glibmm/error.h:23,
> from /usr/include/glibmm-2.4/glibmm/thread.h:48,
> from /usr/include/glibmm-2.4/glibmm.h:89,
> from /usr/include/gtkmm-2.4/gtkmm.h:87,
> from me-tv.h:30,
> from dvb_frontend.cc:21:
> /usr/include/stdlib.h:774:12: note: candidate: int abs(int)
> extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
> ^~~
> In file included from /usr/include/c++/6/ext/string_conversions.h:41:0,
> from /usr/include/c++/6/bits/basic_string.h:5402,
> from /usr/include/c++/6/string:52,
> from /usr/include/c++/6/bits/locale_classes.h:40,
> from /usr/include/c++/6/bits/ios_base.h:41,
> from /usr/include/c++/6/ios:42,
> from /usr/include/c++/6/ostream:38,
> from /usr/include/c++/6/iterator:64,
> from /usr/include/glibmm-2.4/glibmm/ustring.h:26,
> from /usr/include/glibmm-2.4/glibmm/exception.h:25,
> from /usr/include/glibmm-2.4/glibmm/error.h:23,
> from /usr/include/glibmm-2.4/glibmm/thread.h:48,
> from /usr/include/glibmm-2.4/glibmm.h:89,
> from /usr/include/gtkmm-2.4/gtkmm.h:87,
> from me-tv.h:30,
> from dvb_frontend.cc:21:
> /usr/include/c++/6/cstdlib:180:3: note: candidate: long long int std::abs(long long int)
> abs(long long __x) { return __builtin_llabs (__x); }
> ^~~
> /usr/include/c++/6/cstdlib:172:3: note: candidate: long int std::abs(long int)
> abs(long __i) { return __builtin_labs(__i); }
> ^~~
> make[3]: *** [dvb_frontend.o] Error 1
The full build log is available from:
http://people.debian.org/~lucas/logs/2016/07/13/me-tv_1.3.7-1_unstable_gcc6.log
A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!
About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.
Reply to: